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Tony's patches to allow you to position yourself at an offset from the

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default location (i.e. end of the runway.)  This allows you to start
up on final and things like that.
This commit is contained in:
curt 2001-03-02 23:27:22 +00:00
parent d84c64563b
commit 29dede4c1a
2 changed files with 23 additions and 0 deletions

15
src/Main/fg_init.cxx
View file

@ -330,9 +330,24 @@ bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
"runway = " << found_r.lon << ", " << found_r.lat
<< " length = " << found_r.length * FEET_TO_METER * 0.5
<< " heading = " << azimuth );
geo_direct_wgs_84 ( 0, found_r.lat, found_r.lon,
azimuth, found_r.length * FEET_TO_METER * 0.5 - 5.0,
&lat2, &lon2, &az2 );
if ( fabs( fgGetDouble("/sim/startup/offset-distance") ) > FG_EPSILON ) {
double olat, olon;
double odist = fgGetDouble("/sim/startup/offset-distance");
odist *= NM_TO_METER;
double oaz = azimuth;
if ( fabs(fgGetDouble("/sim/startup/offset-azimuth")) > FG_EPSILON ) {
oaz = fgGetDouble("/sim/startup/offset-azimuth") + 180;
}
while ( oaz >= 360.0 ) { oaz -= 360.0; }
geo_direct_wgs_84 ( 0, lat2, lon2, oaz, odist, &olat, &olon, &az2 );
lat2=olat;
lon2=olon;
}
fgSetDouble("/position/longitude", lon2 );
fgSetDouble("/position/latitude", lat2 );
fgSetDouble("/orientation/heading", heading );

8
src/Main/options.cxx
View file

@ -565,6 +565,10 @@ parse_option (const string& arg)
} else if ( arg.find( "--airport-id=") != string::npos ) {
// NB: changed property name!!!
fgSetString("/sim/startup/airport-id", arg.substr(13));
} else if ( arg.find( "--offset-distance=") != string::npos ) {
fgSetDouble("/sim/startup/offset-distance", atof(arg.substr(18)));
} else if ( arg.find( "--offset-azimuth=") != string::npos ) {
fgSetDouble("/sim/startup/offset-azimuth", atof(arg.substr(17)));
} else if ( arg.find( "--lon=" ) != string::npos ) {
fgSetDouble("/position/longitude",
parse_degree(arg.substr(6)));
@ -1060,6 +1064,10 @@ fgUsage ()
cout << "Initial Position and Orientation:" << endl;
cout << "\t--airport-id=ABCD: specify starting postion by airport id"
<< endl;
cout << "\t--offset-distance: specify distance to threshhold"
<< " (NM)" << endl;
cout << "\t--offset-azimuth: specify heading to threshhold (deg) "
<< endl;
cout << "\t--lon=degrees: starting longitude in degrees (west = -)"
<< endl;
cout << "\t--lat=degrees: starting latitude in degrees (south = -)"